CABLE SCHEME TO CONNECT A PC EMULATING A TU58 DRIVE
TO A VAX/PDP CONTROLLER

                 NEW                               ORIGINAL
                CABLE                            DRIVE CABLE               
 PC | DB9 (F) <-------> 10 PIN (M) | 10 PIN (F) <-----------> 10 PIN (F) | VAX/PDP-11
                        
  
  TU58 (EMULATED) 
  DRIVE CONNECTOR

     (male) 
    ___---___  
   |0 2 4 6 8| 
   |1 3 X 7 9| 
    ---------  

   0 --> GND
   1 --> AUX-B
   2 --> RX-
   3 --> RX+
   4 --> GND
   5 --> *NOT CONNECTED*
   6 --> TX+
   7 --> TX-
   8 --> AUX-A
   9 --> GND


  Connection to RS232

 CONTROLLER     PC
    TU58  ----  DB9
      3 -------> 2 (rx)
      6 -------> 3 (tx)
      2 --,----> 5 (gnd)
      7 __|
      9 __|
      0 __|
      4 __|